Material roll winding device

Abstract

The invention relates to a material roll winding device, and the material roll winding device is used to wind a material web, and especially a paper web or a cardboard web on at least one winding core or one preferable reel to form at least one material roll; during winding, at least one roller supported on a rolling bearing with a bearing rigidity is pressed against the material roll, wherein the rolling bearing can be connected to the supporting part in a movable way through a buffering device with a seal rigidity. In order to improve the material roll structure and especially to stabilize the behaviors in the winding area, the invention defines that the ratio of the seal rigidity and the bearing rigidity is less than or equal to 0.55, is preferably less than or equal to 0.3, and is especially preferably close to zero.

Description

technical field [0001] The invention relates to a roll winding device for winding a material web, in particular a paper or cardboard web, on at least one winding core, preferably a mandrel, into at least one roll, wherein During winding, at least one roller supported on a rolling bearing with bearing stiffness rests against the roll, wherein the rolling bearing is movably connected to the support via a damper with sealing stiffness. Background technique [0002] The invention is described below in connection with the treatment of paper webs. However, the invention can also be used correspondingly in other webs which are treated similarly. This is, but is not exhaustive of, webs made of cardboard, plastic or metal foil. [0003] Paper webs of relatively large widths up to more than 11 meters are produced in the paper machine. Production takes place almost continuously. Here, the article running direction of the paper machine is defined as the longitudinal direction of all...

AI Technical Summary

Problems solved by technology

Unrelated to this, operators of paper mills face another fundamental problem: the pursuit of high production speeds in order to maintain competitiveness and high productivity

However, the result is often unsatisfactory roll structures

Especially in the case of paper grades with demanding winding requirements, ie paper grades with a coefficient of friction of more than 0.55 and especially more than 0.7, the roll structure is often unsatisfactory at high production speeds

Furthermore the productivity, that is to say above all the winding speed can hardly be increased beyond the reliable transfer of 2800 m / min

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